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In general chemistry lab 2, Devising a Reduction Potential Table, Why was it necessary to do Step 3 of the Laboratory Investigations?
(Step 3 of the Laboratory Investigations :
For the cell wilt the largest cell potential, place the metal of one half-cell in the solution of the other half-cell.)
Calculate the molar concentration of a solution prepared by dissolving 2.34 g of sodium sulfate (MW = 142) in enough waterto make 250 ml of solution.
Calculate the amount of heat liberated (in kJ) from 437 g of mercury when it cools from 61.0°C to 12.0°C.
One of the students in lab decided to use two fractionating columns (one on top of the other) instead of just one. How would this: a) affect the separation between hexane and heptane?
An electrical heater delivers 7.880 kJ of energy (as heat) to a system consisting of the gas inside a cylinder having a movable piston. As a result, the piston moves against a constant external pressure such
Evaluate the average kinetic and potential energies, and , for the ground state (n=0) of the harmonic oscillator by carrying out the appropriate integration.
62.8 mL of air is collected over water at 24 degrees celsius and 733 mm Hg pressure. find the volume of the dry air at STP
would the separation of the grape soda dyes work equally well if you reversed the order of IPA concentrations and used 20% IPA first to remove the blue dye and then switched to 5% IPA to remove the red dye
a premature infant is born. she weighs less than normal. her mother has been on a near starvation diet for the last month. the infant's blood glucose at birth and 5 hours later is very low. the problem may have been
briefly describe your synthetic strategy. you may use any reagents of your choice. if any reagent you wish to use is unstable and has a small shelf-life
In preparation of p-iodonitrobenzene, the reaction is driven forward by the formation of N2 gas for two reasons. Reason number one is thermodynamic and reason number two is kinetic. Explain both of these reasons
What is the volume in mL of 0.762 M HCl(aq) needed to reach halfway to the equivalence (stoichiometric) point in the titration of 41.9 mL of 0.457 M N2H4(aq) (Kb = 1.7 x 10-6).
A mixture of amino acids is subjected to paper electrophoresis at pH 6.0. The amino acids present in the mixture are Val, Glu, Phe, Ser, and Lys. Which amino acids will migrate toward the cathode? Toward the anode? Explain.
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